Finding the Fourth Proportional to 20,242,554.12, 27,905,670.20 and 14,431,246.80
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Solution
The fourth proportional to 20,242,554.12, 27,905,670.20 and 14,431,246.80 is: 19,894,407.17
Step by Step Solution
- Step 1: Write the proportion equation
20,242,554.12 : 27,905,670.20 = 14,431,246.80 : x - Step 2: Convert to fraction form
20,242,554.12/27,905,670.20 = 14,431,246.80/x - Step 3: Cross multiply
20,242,554.12x = 27,905,670.20 × 14,431,246.80 - Step 4: Simplify right side
20,242,554.12x = 402,713,613,775,605.38 - Step 5: Solve for x
x = 402,713,613,775,605.38/20,242,554.12 - Step 6: Final answer
x = 19,894,407.17
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.